# zoo v1.7-11

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## S3 Infrastructure for Regular and Irregular Time Series (Z's ordered observations)

An S3 class with methods for totally ordered indexed
observations. It is particularly aimed at irregular time series
of numeric vectors/matrices and factors. zoo's key design goals
are independence of a particular index/date/time class and
consistency with ts and base R by providing methods to extend
standard generics.

## Functions in zoo

Name | Description | |

lag.zoo | Lags and Differences of zoo Objects | |

zooreg | Regular zoo Series | |

xyplot.zoo | Plot zoo Series with Lattice | |

ggplot2.zoo | Convenience Functions for Plotting zoo Objects with ggplot2 | |

xblocks | Plot contiguous blocks along x axis. | |

na.approx | Replace NA by Interpolation | |

na.fill | Fill NA or specified positions. | |

rollapply | Apply Rolling Functions | |

yearqtr | An Index Class for Quarterly Data | |

na.StructTS | Fill NA or specified positions. | |

as.zoo | Coercion from and to zoo | |

ORDER | Ordering Permutation | |

window.zoo | Extract/Replacing the Time Windows of Objects | |

coredata | Extracting/Replacing the Core Data of Objects | |

is.regular | Check Regularity of a Series | |

read.zoo | Reading and Writing zoo Series | |

zoo | Z's Ordered Observations | |

plot.zoo | Plotting zoo Objects | |

na.trim | Trim Leading/Trailing Missing Observations | |

aggregate.zoo | Compute Summary Statistics of zoo Objects | |

frequency<- | Replacing the Index of Objects | |

na.locf | Last Observation Carried Forward | |

make.par.list | Make a List from a Parameter Specification | |

yearmon | An Index Class for Monthly Data | |

merge.zoo | Merge Two or More zoo Objects | |

rollmean | Rolling Means/Maximums/Medians/Sums | |

MATCH | Value Matching | |

na.aggregate | Replace NA by Aggregation | |

index | Extracting/Replacing the Index of Objects | |

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## Last month downloads

## Details

Date | 2014-02-27 |

License | GPL-2 | GPL-3 |

URL | http://zoo.R-Forge.R-project.org/ |

Packaged | 2014-02-27 08:32:43 UTC; zeileis |

NeedsCompilation | yes |

Repository | CRAN |

Date/Publication | 2014-02-27 11:46:02 |

depends | base (>= 2.10.0) , R (>= 2.10.0) , stats |

suggests | chron , coda , DAAG , fts , ggplot2 , its , mondate , scales , strucchange , timeDate , timeSeries , tis , tseries , xts |

imports | graphics , grDevices , lattice (>= 0.20-27) , utils |

Contributors | Achim Zeileis, Felix Andrews, G. Grothendieck, Jeffrey Ryan |

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